I got all the stars, but I found those spinning stairs very awkward, . Other than that it was all quite straight forward, . Maybe rather to much red brick to really look inviting.
One star in the far corner seemed impossible to reach. I managed the other one using the two sliders. I didn't care for the rotating stair but it was original and clever.
I agree with the others - the rotating staircase is inconvenient and annoying, but the idea is original. Although, in my opinion, the problem at this level is different - there are three sliders on the final line and two of them are completely unnecessary. But perhaps you did this for symmetry, in which case everything is fine. In the future, please try to use less red in your design - it irritates the eyes (this is the general opinion of the forum players). Thank you